3 MicroeconomicsMicroeconomics is the study of how individual households and firms make decisions and how they interact with one another in markets.

4 Macroeconomics Macroeconomics is the study of the economy as a whole.Its goal is to explain the economic changes that affect many households, firms, and markets at once.

5 Macroeconomics Macroeconomics answers questions like the following:Why is average income high in some countries and low in others?Why do prices rise rapidly in some time periods while they are more stable in others?Why do production and employment expand in some years and contract in others?

6 The Economy’s Income and ExpenditureWhen judging whether the economy is doing well or poorly, it is natural to look at the total income that everyone in the economy is earning.

7 The Economy’s Income and ExpenditureFor an economy as a whole, income must equal expenditure because:Every transaction has a buyer and a seller.Every dollar of spending by some buyer is a dollar of income for some seller.

8 Gross Domestic ProductGross domestic product (GDP) is a measure of the income and expenditures of an economy.It is the total market value of all final goods and services produced within a country in a given period of time.

9 The Circular-Flow DiagramThe equality of income and expenditure can be illustrated with the circular-flow diagram.

11 The Measurement of GDPGDP is the market value of all final goods and services produced within a country in a given period of time.

12 The Measurement of GDP Output is valued at market prices.It records only the value of final goods, not intermediate goods (the value is counted only once).It includes both tangible goods (food, clothing, cars) and intangible services (haircuts, housecleaning, doctor visits).

13 The Measurement of GDPIt includes goods and services currently produced, not transactions involving goods produced in the past.It measures the value of production within the geographic confines of a country.

14 The Measurement of GDPIt measures the value of production that takes place within a specific interval of time, usually a year or a quarter (three months).

15 What Is Counted in GDP?GDP includes all items produced in the economy and sold legally in markets.

16 What Is Not Counted in GDP?GDP excludes most items that are produced and consumed at home and that never enter the marketplace.It excludes items produced and sold illicitly, such as illegal drugs.

17 Other Measures of IncomeGross National Product (GNP)Net National Product (NNP)National IncomePersonal IncomeDisposable Personal Income

18 Gross National ProductGross national product (GNP) is the total income earned by a nation’s permanent residents (called nationals).It differs from GDP by including income that our citizens earn abroad and excluding income that foreigners earn here.

19 Net National Product (NNP)Net National Product (NNP) is the total income of the nation’s residents (GNP) minus losses from depreciation.Depreciation is the wear and tear on the economy’s stock of equipment and structures.

20 National IncomeNational Income is the total income earned by a nation’s residents in the production of goods and services.It differs from NNP by excluding indirect business taxes (such as sales taxes) and including business subsidies.

21 Personal IncomePersonal income is the income that households and noncorporate businesses receive.Unlike national income, it excludes retained earnings, which is income that corporations have earned but have not paid out to their owners.In addition, it includes household’s interest income and government transfers.

22 Disposable Personal IncomeDisposable personal income is the income that household and noncorporate businesses have left after satisfying all their obligations to the government.It equals personal income minus personal taxes and certain nontax payments.

24 The Components of GDP Consumption (C): Investment (I):The spending by households on goods and services, with the exception of purchases of new housing.Investment (I):The spending on capital equipment, inventories, and structures, including new housing.

25 The Components of GDP Government Purchases (G): Net Exports (NX):The spending on goods and services by local, state, and federal governments.Does not include transfer payments because they are not made in exchange for currently produced goods or services.Net Exports (NX):Exports minus imports.

35 GDP DeflatorThe GDP deflator measures the current level of prices relative to the level of prices in the base year.It tells us the rise in nominal GDP that is attributable to a rise in prices rather than a rise in the quantities produced.

42 Real GDP in the United StatesBillions of 1992 Dollars(Periods of falling real GDP)8,0007,0006,0005,0004,0003,0001970197519801985199019952000

43 GDP and Economic Well-BeingGDP is the best single measure of the economic well-being of a society.GDP per person tells us the income and expenditure of the average person in the economy.

44 GDP and Economic Well-BeingHigher GDP per person indicates a higher standard of living.GDP is not a perfect measure of the happiness or quality of life, however.

45 GDP and Economic Well-BeingSome things that contribute to well-being are not included in GDP.The value of leisure.The value of a clean environment.The value of almost all activity that takes place outside of markets, such as the value of the time parents spend with their children and the value of volunteer work.

47 SummaryBecause every transaction has a buyer and a seller, the total expenditure in the economy must equal the total income in the economy.Gross Domestic Product (GDP) measures an economy’s total expenditure on newly produced goods and services and the total income earned from the production of these goods and services.

48 SummaryGDP is the market value of all final goods and services produced within a country in a given period of time.GDP is divided among four components of expenditure: consumption, investment, government purchases, and net exports.

49 SummaryNominal GDP uses current prices to value the economy’s production. Real GDP uses constant base-year prices to value the economy’s production of goods and services.The GDP deflator--calculated from the ratio of nominal to real GDP--measures the level of prices in the economy.

50 SummaryGDP is a good measure of economic well-being because people prefer higher to lower incomes.It is not a perfect measure of well-being because some things, such as leisure time and a clean environment, aren’t measured by GDP.